More yellow rubber ducks have appeared around Canonsburg, and while they're quite a bit bigger than the last ones, their origin is no longer a secret. 

The mystery has been growing — literally — over the past two weeks. It began with about 2,000 small ducks on Sept. 29. A few days later, 2,000 medium ducks appeared. As the intrigue got bigger, so did the ducks — 600 more, to be exact. 

It all culminated on Thursday with nearly a dozen 14-foot-tall ducks on rooftops throughout Canonsburg.

Now that all their cards, or ducks, are on the table, Grandpa Joe's Candy Shop is taking responsibility. 

"I just love to do crazy, out-of-the-box ideas, and that's kind of where this one came from," said Grandpa Joe's founder and president Christopher J. Beers. 

So how did they do it? 

"We would wake up at 3 o'clock in the morning, and we had pretty much a carload of ducks," Beers said.   

The ducks were a hit around town. People were taking pictures and even honking at them. But Grandpa Joe's has 19 locations in several states. So why Canonsburg? 

"This is home for me. Canonsburg is my home, and so that's what made it even more special for me to do it here and give back to the community that has been so good to us," Beers said. 

Beers said it was a rather expensive marketing campaign, well into five figures, but it was all worth it. 

"Definitely worth it. Look at all the smiles we've had in the community," Beers said. 

If you want to see them for yourself, the ducks will remain around town as long as weather permits.